If you buy a production one, it will almost certainly specify some number of pounds (45, for instance) at 28 inches (the standard draw length). Somewhere on the riser, you would likely see this marked like 45@28. If you have an unusually short or long draw, then a custom (like the ChekMate) might be a better option. If you're just talking an inch or two though, your 45# bow is more like a 42 or 43 @ 27 inches or 47 or 48 at 29 inches.
If you choose a standard length bow like the Grizzly, then a slight over or under draw isn't really a big deal. If, on the other hand, you have a super long draw - 31 more and go with a really short bow like a Bear Kodiak Magnum, you may experience some string pinch. On the other hand, if you have a short draw, something like a K-Mag would be wonderful - smaller, lighter, more maneuverable, etc.
Also - since you're interested, longbows are worth looking at. Many traditional archers like them better than recurves and there are some good longbow options out there as well. The Bear Montana is a great production one for not too much cash. Martin makes a nice one that costs a bit more and Howard Hill Archery makes a beautiful one for a reasonable price. That's what I shoot but recurves are easier to find for a reasonable price and easier to sell if you decide they aren't for you.
Here's my Howard Hill Halfbreed (60@29) with a snuffed groundhog from last year...
This is my son with his Bear Kodiak Magnum (think that was his 45@28 one - he has another that's 55@28) and his first deer...
Honestly, he's too tall and has too long a draw for the K-Mag but he's shot it since he was pretty young and is very good with it.